Featured Research

from universities, journals, and other organizations

Scab resistance in durum wheat

Date:
September 17, 2011
Source:
American Society of Agronomy
Summary:
Durum wheat is a valuable cereal crop widely used for human consumption in the United States, Canada, and several European countries. Scab or Fusarium head blight is one of the crop's most serious diseases, reducing its grain yield and quality. Researchers are searching for a solution to this widespread disease.

Durum wheat is a valuable cereal crop widely used for human consumption in the United States, Canada, and several European countries. Scab or Fusarium head blight is one of the crop's most serious diseases, reducing its grain yield and quality. Current durum cultivars don't have resistance to this widespread disease.

Related Articles


While working on the Durum Germplasm Enhancement Project (DGE), Dr. Prem Jauhar and staff at the USDA-ARS Northern Crop Research Laboratory, Fargo, ND discovered that a diploid wheatgrass contains the genes needed for scab resistance. The team produced a new wheat line called DGE-1 by incorporating a specific wheatgrass chromosome 1E into durum cultivars. Released in 2008, the DGE-1 line has 30 chromosomes, 28 coming from durum wheat and a pair from wheat grass. This is the first time a wheat line with enhanced scab tolerance was produced by Dr. Jauhar's DGE project.

For stable scab resistance, however, it's necessary to transfer the resistance genes from the added wheatgrass chromosome into related durum wheat chromosomes. This transfer is most likely to occur when the target chromosomes are in a single dose, but normally chromosomes are in pairs. Through several crosses involving the DGE-1 line, Dr. Jauhar was able to produce hybrid strains of durum wheat in which the grass chromosome 1E substituted its counterparts 1A and 1B of durum wheat. Jauhar's team used a technique to identify wheatgrass chromosomes incorporated into durum. By using molecular markers for these specific chromosomes, the scientists were able to identify these chromosomes rapidly and economically.

"These studies on chromosome engineering will help bring about genomic reconstruction that will have far-reaching implications in both basic and applied research on wheat," said Jauhar. This research is ongoing in the Cereal Crops Research Unit of the USDA-ARS Northern Crop Research Laboratory in Fargo.


Story Source:

The above story is based on materials provided by American Society of Agronomy. Note: Materials may be edited for content and length.


Journal Reference:

  1. Prem P. Jauhar, Terrance S. Peterson. Cytological and Molecular Characterization of Homoeologous Group-1 Chromosomes in Hybrid Derivatives of a Durum Disomic Alien Addition Line. The Plant Genome Journal, 2011; 4 (2): 102 DOI: 10.3835/plantgenome2011.01.0002

Cite This Page:

American Society of Agronomy. "Scab resistance in durum wheat." ScienceDaily. ScienceDaily, 17 September 2011. <www.sciencedaily.com/releases/2011/09/110917082744.htm>.
American Society of Agronomy. (2011, September 17). Scab resistance in durum wheat. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2011/09/110917082744.htm
American Society of Agronomy. "Scab resistance in durum wheat." ScienceDaily. www.sciencedaily.com/releases/2011/09/110917082744.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Reuters - Innovations Video Online (Jan. 30, 2015) A nanosensor that mimics the oral effects and sensations of drinking wine has been developed by Danish and Portuguese researchers. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Discovery Of 'Dragon' Dinosaur In China Could Explain Myths

Discovery Of 'Dragon' Dinosaur In China Could Explain Myths

Newsy (Jan. 30, 2015) A long-necked dinosaur from the Jurassic Period was discovered in China. Researchers think it could answer mythology questions. Video provided by Newsy
Powered by NewsLook.com
Poll Says Firstborn Is Responsible, Youngest Is Funnier

Poll Says Firstborn Is Responsible, Youngest Is Funnier

Newsy (Jan. 30, 2015) According to a poll out of the U.K., eldest siblings feel more responsible and successful than their younger siblings. Video provided by Newsy
Powered by NewsLook.com
Brawling Pandas Are Violently Adorable

Brawling Pandas Are Violently Adorable

Buzz60 (Jan. 29, 2015) Video of pandas play fighting at the Chengdu Research Base in China will make your day. Mara Montalbano (@maramontalbano) shows us. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins